US11932115B2 - Multi-phase inverter and related high voltage topology - Google Patents

Multi-phase inverter and related high voltage topology Download PDF

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Publication number
US11932115B2
US11932115B2 US17/283,331 US201917283331A US11932115B2 US 11932115 B2 US11932115 B2 US 11932115B2 US 201917283331 A US201917283331 A US 201917283331A US 11932115 B2 US11932115 B2 US 11932115B2
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inverter
electrical energy
inverters
electrical
phases
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US20210379997A1 (en
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Martin Brüll
Florian Uhrig
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Vitesco Technologies GmbH
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Vitesco Technologies GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/24—Using the vehicle's propulsion converter for charging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the invention relates to an inverter configuration, and in particular a configuration which is advantageous for vehicles with electric drive motor, drive or traction battery, and fuel cell.
  • the present invention improves systems with a combination of different power supplies and charging devices, provides associated methods, and is situated in the field of motors or alternators powered by rechargeable batteries and/or fuel cells.
  • the invention may advantageously be applied to electric motor vehicles in which the fuel cell and/or battery can power the motor via an inverter, and also perhaps be recharged from an electrical network when the motor vehicle is at a standstill.
  • Electrified vehicles including hybrid-electric vehicles (HEVs) and battery electric vehicles (BEVs) typically comprise a traction (or high-voltage) battery which provides power to an electric drive or traction motor or machine for propulsion.
  • Power inverters are used to convert direct current (DC) power to alternating current (AC) power.
  • the typical AC traction machine is a 3-phase motor that may be powered by 3 sinusoidal currents each driven with 120 degrees phase separation, but any number of phases may be envisaged. In particular, a drive motor may have 6 phases.
  • An electrified vehicle may use a fuel cell to provide electrical power, either as the sole source of electrical power to the battery and the motor, or in addition to an external DC or AC network supply with which the battery may be charged.
  • the vehicle may also be equipped with an embedded charging device comprising an AC/DC converter which makes it possible to rectify the AC power from the electrical network to charge the batteries.
  • the vehicle may also be equipped with a DC/DC converter to adapt the network voltage level to the voltage level of the batteries.
  • the battery and the fuel cell are DC elements
  • the drive motor may be an AC element
  • inverters may be used to transfer the electrical energy between the different elements.
  • the inverter or inverters may be Analog Phase Voltage Inverters, as disclosed in the applications WO 2017211655 A1, WO 2017211656 A1, and WO 2017211657 A1, which documents are included by reference.
  • Analog Phase Voltage (APV) Inverters typically use either a half bridge or H-bridge boost converter with a high frequency (for example, >200 kHz) to do the necessary conversion between AC and DC voltages.
  • fuel cell and battery may be connected in different topologies with one or more DC/DC converters and a DC link.
  • An inverter to drive the motor may also be connected to the DC link.
  • the power switches of an inverter or inverters in particular may add additional cost due to the high current and or voltage requirements.
  • Typical power switches may be MOSFET's or IGBT's.
  • MOSFET's or IGBT's MOSFET's or IGBT's.
  • a high-voltage DC link between battery and inverter brings a voltage independence between drivetrain inverter and battery voltage.
  • An Analog Phase Voltage Inverter (APV), a Half-Bridge Boost converter operating at High Frequency (>200 kHz), may be used to create a sinus wave on the boosted voltage side.
  • Electric components of the power supply subsystem and of the charging subsystem may add additional cost. Powering the motor and charging the batteries are performed with different phases. Therefore, it may be advantageous to reuse the components used to supply the electric motor with power, to implement the electrical power transfer and battery charging. In addition, it may be possible to reuse the motor as part of the advantageous concept.
  • An embodiment of the invention comprises a multi-phase inverter or set of inverters, with AC phases being used between a DC electrical energy source and electrical machine or motor, and DC electrical energy storage and electrical machine or motor.
  • the DC sides of the inverter or inverters may be coupled to an electrical energy storage such as a battery and/or may be coupled to an electrical energy source such as a fuel cell.
  • a particularly advantageous implementation comprises two 3-phase APV inverters, which on the AC side are connected to the same electrical machine (e-machine) or motor, and on the DC side one is connected to a battery, and the other is connected to a fuel cell.
  • the AC phases form an AC link between the DC energy storage and energy source elements.
  • two inverters may be used to drive one motor using shared AC phases.
  • the inverters may share three AC phases to drive the motor or e-machine.
  • Other embodiments may use phases which are not interconnected; rather, each inverter drives separate phases of a multi-phase motor.
  • the resulting configuration has 6 phases available to drive the e-machine or motor.
  • a strict galvanic separation can thus be achieved between the circuitry associated with an electrical storage (battery) via a first inverter, and the circuitry associated with an electrical source (fuel cell) via a second inverter.
  • An embodiment of the invention may use H-bridges of the inverter for connection to an AC network or electrical grid, both as a charging source e.g. for a battery and/or to receive electrical power.
  • Another embodiment of the invention may use H-bridges of the inverter for connection to a DC network or electrical grid, both as a charging source e.g. for a battery and/or to receive electrical power.
  • FIGS. 1 A- 1 C show different topologies of battery and fuel cell which are used in electrically-driven vehicles.
  • FIG. 2 shows an embodiment of the invention using two APV inverters coupled to an AC motor.
  • FIG. 3 shows an alternative embodiment of the invention using two APV inverters coupled to an AC motor.
  • FIG. 1 A shows a topology where the AC side of an inverter INV 1 a drives an electric motor or e-machine EM.
  • the motor in turn drives the wheels.
  • the DC side of the inverter gets power from, and is connected to, a fuel cell system FC.
  • the DC connection between fuel cell and inverter is also electrically connected or coupled to a DC-DC converter CV 1 a , which is in turn connected to a high-voltage DC battery HV.
  • the fuel cell and the DC side of the inverter operate at a common DC voltage, which is typically determined by an appropriate operating voltage for the fuel cell system.
  • the AC voltage for the electric or traction motor EM is determined by the inverter as appropriate for the motor and the drive which is desired from the motor.
  • FIG. 1 B shows a different topology.
  • the AC side of an inverter INV 1 b drives an electric motor or e-machine EM.
  • the motor in turn drives the wheels.
  • the DC side of the inverter gets power from, and is connected to, a high-voltage DC battery HV.
  • the DC connection between battery and inverter is also electrically connected or coupled to a DC-DC converter CV 1 b , which is in turn connected to a fuel cell system FC.
  • the battery and the DC side of the inverter operate at a common DC voltage, which is typically determined by an appropriate operating voltage for the battery.
  • the voltage for the fuel cell is independent of the battery voltage, due to the operation of the DC-DC converter.
  • the AC voltage for different phases of the electric or traction motor EM is determined as appropriate for the motor and the drive which is desired from the motor, and is substantially independent of the DC voltages.
  • FIG. 1 C shows yet another topology.
  • the AC side of an inverter INV 1 c drives an electric motor or e-machine EM.
  • the DC side of the inverter gets power from, and is connected to, two DC-DC converters CV 1 c and CV 2 c .
  • DC-DC converter CV 1 a is in turn connected to a high-voltage DC battery HV.
  • DC-DC converter CV 1 b is connected to a fuel cell system FC.
  • the voltages for the fuel cell and the battery voltage are independent of each other and the DC side of the inverter, and vice versa, due to the operation of the two DC-DC converters.
  • the AC voltage for different phases of the electric or traction motor EM is still determined as appropriate for the motor and the drive which is desired from the motor, and remains substantially independent of the DC voltages.
  • FIG. 2 an embodiment of the invention is shown with two inverters, INV 1 and INV 2 .
  • the first inverter is shown in this embodiment as electrically connected on the DC side to a DC energy storage ES 1 such as a battery.
  • the second inverter is shown in this embodiment as electrically connected to a DC energy source ES 2 such as a fuel cell.
  • Other embodiments might include additional inverters coupled to additional energy storage or sources.
  • Both inverters are shown as electrically connected on the AC side to an electrical motor or electrical machine (e-motor or e-machine) shown as EM. The connection is via the three AC phases shown as PH 1 , PH 2 , PH 3 .
  • INV 1 and INV 2 are both multi-phase inverters, and multiple AC phases of the inverter or inverters are adapted to be coupled to the motor. Separate DC connections of the inverter or inverters are adapted to be coupled to the DC electrical energy source and the DC electrical energy storage, such that there is no DC electrical connection between the DC electrical energy source and the DC electrical energy storage.
  • AC-N An optional connection to an AC charger (AC-N) is shown as part of inverter INV 2 .
  • This connection uses the H-bridges HB 1 , HB 2 , HB 3 of inverter 2 .
  • the charger AC-N might also be replaced by a connection to supply power to an AC network as AC-N, or AC-N might be a bi-directional connection to an AC power network.
  • AC-N When the system is implemented in a vehicle, AC-N would be the connection to the immobile AC network, for example in a parking garage or parking lot.
  • the inverters INV 1 , INV 2 are preferably APV networks, which use a higher frequency across inductors L 1 , L 2 , L 3 of the respective inverters to transform the voltage levels as needed.
  • Each inverter has 3 H-bridges HB 1 , HB 2 , HB 3 .
  • Each H-bridge comprises 4 switches, labelled HS.
  • the power switches in embodiments may be MOSFET's or IGBT's, or other semiconductor devices, or other electrical switches.
  • FIG. 3 shows an embodiment of the invention with two inverters, INV 1 and INV 2 , where there is no electrical connection between the AC site of INV 1 and INV 2 .
  • the first inverter is shown in this embodiment as electrically connected on the DC side to a DC energy storage ES 1 such as a battery.
  • the second inverter is shown in this embodiment as electrically connected to a DC energy source ES 2 such as a fuel cell.
  • Other embodiments might include additional inverters coupled to additional energy storage or sources.
  • Each inverter is shown as separately electrically connected on the AC side to separate phases of electrical motor or electrical machine (e-motor or e-machine) shown as EM.
  • Inverter INV 1 on the AC side generates 3 phases (PH 1 , PH 2 , PH 3 ) for the electric motor EM.
  • INV 2 on the AC side generates 3 additional phases (PH 4 , PH 5 , PH 6 ) for the electric motor EM.
  • the 2 ⁇ 3 phase configuration is given as an example, and the person of skill will recognize other configurations as possible, depending particularly on the mechanical configuration of the electric motor EM.
  • the electrical activation of the phases PH 1 , PH 2 , PH 3 and PH 4 , PH 5 , PH 6 may be simultaneous at 0 degrees offset (e.g. PH 1 and PH 4 simultaneously).
  • the phases may be offset by 60 degrees, or some other offset.
  • AC-N AC charger or network

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Inverter Devices (AREA)
  • Fuel Cell (AREA)
US17/283,331 2018-10-10 2019-10-08 Multi-phase inverter and related high voltage topology Active 2040-10-19 US11932115B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018217309.5 2018-10-10
DE102018217309.5A DE102018217309A1 (de) 2018-10-10 2018-10-10 Mehrphasiger Wechselrichter und verwandte Hochspannungstopologie
PCT/EP2019/077246 WO2020074531A1 (en) 2018-10-10 2019-10-08 Multi-phase inverter for multiple sources in a vehicle and related high voltage topology

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US20210379997A1 US20210379997A1 (en) 2021-12-09
US11932115B2 true US11932115B2 (en) 2024-03-19

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US (1) US11932115B2 (zh)
JP (1) JP7259022B2 (zh)
KR (1) KR102533464B1 (zh)
CN (1) CN112912269B (zh)
DE (1) DE102018217309A1 (zh)
WO (1) WO2020074531A1 (zh)

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